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  • jdbc 读取oracle long raw 字段,里面存的是文本

    jdbc 读取oracle long raw 字段,里面存的是文本

    参考:

    http://singlewolf.iteye.com/blog/278769

    http://blog.csdn.net/restraint/article/details/7190265

    http://blog.csdn.net/bq1073100909/article/details/49335491

    String sql = "select condition from tbl t where t.a = ? and t.b = ?";
                PreparedStatement statement = hebSgConn.prepareStatement(sql);
                statement.setString(1, "20170305");
                statement.setInt(2, 146897);
                ResultSet resultSet = statement.executeQuery();
                if (resultSet.next()) {
                    InputStream inputStream = resultSet.getBinaryStream("condition");
                    ByteArrayOutputStream infoStream = new ByteArrayOutputStream();
                    int len = 0;
                    byte[] bytes = new byte[1024];
                    try {
                        while ((len = inputStream.read(bytes)) != -1) {
                            // 将bcache中读取的input数据写入infoStream
                            infoStream.write(bytes, 0, len);
                        }
                    } catch (IOException e1) {
                        throw new Exception("输入流读取异常");
                    } finally {
                        try {
                            inputStream.close(); // 输入流关闭
                        } catch (IOException e) {
                            throw new Exception("输入流关闭异常");
                        }
                    }
                    try {
                        String result = infoStream.toString(DEFAULT_ENCODING);
                        System.out.println(result);
                    } catch (UnsupportedEncodingException e) {
                        throw new Exception("输出异常");
                    }
                }

    基本上是流操作;

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  • 原文地址:https://www.cnblogs.com/stono/p/6635929.html
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